Graphing Motion 

 Motion occurs when there is a change in position of an object with respect to a reference starting point.
 The final position of an object is determined by measuring the change in position and direction of the segments along a trip. The following terms are used to describe and determine motion:
Position
 Position is the location of an object.
 An object changes position if it moves relative to a reference point (starting point).
 The change in position is determined by the distance and direction of an object’s change in position from the starting point (displacement).
 Direction is the line, or path along which something is moving, pointing, or aiming.
 Direction is measured using a reference point with terms such as up, down, left, right, forward, backward, toward, away from, north, south, east, or west.
 The slope (slant or angle) of the line can tell the relative speed of the object.
 When the slope of the line is steep, the speed is faster than if the slope were flatter.
 When the slope of the line is flatter, the speed is slower.
 When the slope of the line is horizontal to the xaxis, the speed is zero (the object is not moving).
 A graph used to show a change in an object’s location over time.
 For this type of graph, time (the independent variable) is plotted on the xaxis and the position (the dependent variable) is plotted on the yaxis.
Different types of graphs representing changes in speed and direction.
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